[5] One or two flower heads measuring 0.5–1.5 in (1–4 cm) appear at the end of individual upper stems.

[6] R. triloba is native in the United States from Utah to the west, Texas and Florida to the south, Minnesota to the north, and Massachusetts to the east.

[1] Habitats include disturbed ground, woodland borders, thickets, rocky slopes, and alongside roads and railways.

[7] R. triloba is widely cultivated in gardens and is easy to grow when provided with full sun and moist soil.

[7][8] In cultivation in the UK, Rudbeckia triloba has gained the Royal Horticultural Society's Award of Garden Merit.